fail if download failed

Signed-off-by: Matt Wrock <matt@mattwrock.com>

Author: mwrock

.expeditor/templates/studiorc

@@ -91,7 +91,10 @@ while ! [ -f "/hab/svc/builder-api/files/builder-github-app.pem" ]; do
   sleep 10
 done
 
-hab pkg install rcpd/testapp -u http://localhost:9636
+hab pkg install rcpd/testapp -u http://localhost:9636 --channel unstable --auth bobo || {
+  echo "ERROR: Failed to install rcpd/testapp package"
+  exit 1
+}
 hab pkg uninstall rcpd/testapp
 hap pkg delete rcpd/testapp/0.1.0/20200401202136 -u http://localhost:9636 --auth bobo
 hab origin delete rcpd -u http://localhost:9636 --auth bobo